A FLAT TYPED SEALED BATTERY WITH HERMETIC SEALING STRUCTURE

摘要

A flat disc type sealed battery comprises a battery vessel (5) having a bottom wall (5a) with an electrolyte charging opening (12) formed in the central portion thereof, a battery lid member (6) for covering the upper opening of the battery vessel (5). Power generating components are enclosed by sealing the battery vessel (5) and battery lid member (6), and a first sealing member (13) is provided for sealing the electrolyte charging opening (12) after the electrolyte is charged into the battery vessel (5), and a second sealing member (14) is provided for covering the aperture in the side of the lower edge portion of the electrolyte charging opening (12), and the outer peripheral portion of the second sealing member (14) is welded to the bottom wall (5a) of the battery vessel (5) to seal the battery vessel perfectly.